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1956 Map of Lake Eleanor

Name: 1956 Topographic Map of Lake Eleanor
Creator: U.S. Geological Survey
Published: 1972
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1972

About this map

The High Sierra water system dominates this mid-century landscape, centered on the Hetch Hetchy Reservoir and Lake Eleanor. Following the 1956 field check, the map illustrates the massive engineering of the O'Shaughnessy Dam and the Hetch Hetchy Aqueduct snaking through the Stanislaus National Forest. Beyond the civil works, the land preserves a record of mountain habitation at Meyers Ranch, Hodgdon Ranch, and the Hazel Green Ranch near the Tuolumne-Mariposa line.

Recreational and administrative outposts of Yosemite National Park are well-documented, including the Mather Ranger Sta and the Evergreen Lodge. The terrain transitions from the deep river canyons of the Tuolumne River up to granite landmarks like Kolana Rock and Hetch Hetchy Dome. Small-scale industry and early travel routes are also visible, such as the Five Star Mine and the winding course of the Tioga Road as it climbs toward Aspen Valley.